Quartz-mill.



J. w. MYER.

QUARTZ MILL.

APPLIUATIUH FILED 155.23, 1910.

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UNITED sTATEs PATENT oEEIoE;

JAMES W. MYER, 0F SAN FRANCISCO, CALIFORNIA.

QUARTZ-MILL.

Specification of Letters Patent.

Application led February 28, 1910. Serial No: 546,487.

vuseful Quartz-Mill, of which the following is a specification in suchfull and clear terms as will enable those skilled in the art toconstruct and use the same.

This invention relates to a quartz mill and its object is to produce ashell supporting device which vwill always hold the ruuner at asufficient distance from the xed part of the mill to insure the properfeed at all times. It is to be noted that in the type of mill hereinillustrated the runner is oftenv very heavy and on account of itsconsiderable weight the mill does not feed the rock into the grindingsurfaces as rapidly as it should. The runner must therefore be supportedabove the fixed member at such a distance therefrom as will insure theproper grinding of the material, while at the same time the wear of thesevy eral parts must be taken account of and the upper portion of a millof this type the base l being omitted, Fig. 2 is a plan view of'themill, Fig. 3 is a plan view of one of the nut locking devices, Fig. 4 isa sectional view of a portion of one of the adjusting devices showingthesnap used to secure the nut in a given position, and Fig. 5 is a planview of the nut turning head as it appears around the nut for adjustingthe runner.

It will be understood by those skilled in the art that this adjustingdevice may be applied to any type of mill having a heavy runner whichrequires support for the proper feeding of the material to be ground.

The numeral 1 represents the base of the mill on which the runner 2rotates, said runner being provided with feed openings 3 in thc topthereof. The base has a post 4 and about which said base .is cast. Thispost is provided with screw threads at its upper end, and it is providedwith a key way 5. t0

Cn the post is a nut. 6 having a flange support the shell 2, and saidnut has an arm 8 secured thereto at itsupper end, note Fig.

Patented Nov. 8, 1910.

5, said arm being adapted to rotate the nut to raise or lower the sameas may be desired. This nut is rovided with a key way 9 in which a feater 10 on the disk 1l is ada ted to slide, and this disk is prevented rommoving away from the flange 7 by means of a. nut 12 threaded on theoutside of the nut 6, said disk 11 preventing the nut 12 from beingeither-tightened or loosened on the rotation of the shell 2. In orderthat the nut 6 may be secured on the post 4 in any desired relationthereto the disk 13 is provided said disk having a feather which isadapted to travel in the key way of the post. This disk has itsperiphery provided with a series of notches in which a spring latch 14engaves, a spring l5 bearing on the latch to hold 1t out of or incontact with the disk 13 as may be desired. The latch is secured on thearm 8. Above the disk 13 a nut is threaded on the post and it holds thedisk 13 in close contact with the top of the nut 6. The threads on thepost extend fan enough down the latter to permit a considerableadjustment of the shell to allow for the wearing of its grindingsurfaces.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent of the United States is as follows:

1. In a quartz mill, a fixed grinding member, a runner, a post adaptedto hold said runner in a given position with respect to the fixedmember, a flanged nut adapted to hold the runner at a fixed distanceaway from the grinding member, means to lock said nut against rotation,a second nut adapted to prevent the runner from moving more than a givendistance away from the grinding member and means to prevent therunner'from bearing directly on said second nut, as set forth.

2. In a quartz mill, a fixed grindino mem.

` ber, a runner, a post adapted to hold said runner in a glven positionwith respect to said grinding member, a lianged nut adapted to supportthe runner at a fixed distance away from the grinding member,.a diskadapted to hold said nut from rotation, a second nut adapted to preventthe runner from moving away from the grinding member, and a. ixed diskte prevent the rctation of said second nut, as set forth.

3. In a quartz mili, a fixed grinding member, a runner, a post, a nut onsald ost adapted to support the runner at a ed distance awa7 from thegrinding member, a second nut adapted to prevent said runner from movingaway from the grinding member more than a fixed distance, and means toprevent the movement of said first nut during the rotation of therunner, as set forth.

4. In a quartz mill, a fixed grinding member, a runner, a post adaptedto hold the runner in a fixed relation with the grinding member, aflanged nut on said post adapted to support the runner a fixed distanceabove the grinding member, a nut on the first nut and adapted to preventthe runner from moving away Jfrom the grinding member, a

fixed plate adapted to prevent the rot-ation o said second nut duringthe time of rotation of the runner, a second plate fixed againstrotation and slirlable on the postV above the first nut., means to lockthe firsty nut in any one of a number of positions with respect t`o saidsecond plate, and a nut adapted to secure the second plate closely tothe first nat, as set forth.

In testimonj,- whereof I have hereunto set my hand this 19th clay ofFebruary A. D. lQlO, in the presence of the two subscribed witnesses.

JAMES 7. MYER.

Tit nesses A. K. DAGGETT, RoswnLL P. ROGERS.

